Implement Trace Bandwidth Analysis - Agilent Technologies 4294A Operating Manual

Analysis and Processing of Result
Analyze trace bandwidth
bandwidth analysis.
Delta marker mode
Fixed delta marker mode
Tracking delta marker mode
Delta marker off
When you have selected the delta marker mode, the delta marker (D) appears at the main
marker position on the trace.
NOTE Even after you have placed the delta marker (D) at a point on the screen by pressing the
mode selection key described above, you can move the delta marker to the main marker
position.
The Delta Marker Mode menu provides a mode called the delta-marker-on-the-trace mode
(
MKR
D
from the reference point on the screen (delta marker)," on page 217. Do not select it at this
point. If you select this mode and then turn on the trace bandwidth analysis function, the
mode is automatically changed to the tracking delta marker mode.
Step 5. If you use the fixed delta marker mode, move the delta marker to the desired position on
the screen. For how to move the delta marker, refer toAppendix , "Moving the delta marker
alone to place it at a reference point," on page 218.

Implement trace bandwidth analysis

The following describes the steps to implement trace bandwidth analysis:
Step 1. Activate the trace used to implement trace bandwidth analysis.
Active Trace
Trace A
Trace B
Step 2. Display the main marker and move it to the desired position on the trace to analyze trace
bandwidth. To move the main marker to the peak of the trace, see "Search the
maximum/minimum peak" on page 228.
Step 3. Press the
Step 4. Press the
Softkey label
WIDTH ON off
WIDTH on OFF
If the trace bandwidth analysis function is turned on, the bandwidth (width), center value
(center), Q, peak (peak), DL, and DR are displayed in the Marker Statistics/Trace
240
key). This function is used only as described in Appendix , "Reading the difference
key to display the Search menu.
[Search]
key to turn on the trace bandwidth analysis function.
WIDTH on OFF
Key operation
FIXED DMKR
TRACING DMKR
DMKR OFF
Key operation
[A]
[B]
State of trace bandwidth analysis function
ON
OFF
Chapter 8